Define "no new parking" - project site is a former parking lot

It sounds like you meet the requirements for Option 3, No New Parking, or at least Option 1. If your concern is whether a parking space that is newly constructed, but replaces an existing one, is considered "new parking" or not, my understanding is that the number of parking spaces before and after redevelopment is what matters, not whether they are shiny and new. You want to be careful, though, with how you're defining the LEED project boundary, which isn't totally clear when you describe it as a campus-style site. Per MPR #3 and the Supplemental Guidance document, the boundary needs to include "contiguous land that is associated with and supports normal building operations." Any parking that is dedicated to the project would probably need to be included in that boundary. It sounds like you may be able to include the area of those stalls and still show that you are still reducing the parking count. It does affect your stormwater and light pollution credits, however. If you are applying the AGMBC because it is a campus setting, check the requirements for the LEED site boundary, as it does require accounting for the total parking count of the campus.